Manifolding



Oct. 28, 1941. c. w. BRENN 2,260,602

MANIFOLDING I Filed June 8, 1940 2 Sheets-Sheet l INVENTOR Um" W 51?]??? ATTORNEY Oct. 28, 1941. c. w. BRENN, 2,260,602

Y MANIFOLDING Filed June 8, 1940 2 Sheets-Shea 2 INVENTOR ATTORNEY Patented Oct. 28, 1941 UNITED STATES. PATENT OFFICE Carl W. Brenn, Montclair, N.

graphic Register Company, corporation of New Jersey J., assignor to Auto- Hoboken, N. J a I Application June 8, 1940, Serial No. 339,444

8 Claims.

This invention relates to manifolding, and, more particularly, to an improved transfer or carbon strip and manifolding sets formed of record sheets collated with the improved carbon sheets of the present invention.

This application is a continuation in part of remove the record sheets from the "carbon sheets after the writing operation has been performed. Various means for securing the collated carbon strips and record strips have been proposed, in-

' cluding wire staples going through the pile of strips in the binding margins, and adhesives applied to the binding margin as the strips are being collated and before they are cut into sheet lengths. It has been diflicult, when applying adhesive to paper strips to secure them together,

.to have the adhesive applied in just the right quantity andat just the right degree of wetness, with the result that some of the sheets would adhere together satisfactorily while others would not. Yet, it is decidedly preferable, in many situations, to fasten the strips with an adhesive rather than with staples.

The present invention contemplates the securing of the strips together by a dry adhesive, which is caused to adhere to the strips as a result of being heated, rather than as a result of being wetted as is the common practice. the use of water or wet adhesives on or in the vicinity of the collating machine, and enables the collating, the registering, and finally the cutting of the strips into form-lengths to be performed without the messiness" attendant upon the use of water and wet. adhesive on or about a machine of this kind.

The adhesive material used preferably is such that it becomes tacky at temperatures above body temperature, and, in the particular form of the invention herein disclosed, the adhesive is applied to the carbon or transfer'strips preferably while coating these strips with carbon. For this purpose, the carbon strip is usually left with one or more uncoated margins and the heat-set ad- This avoids hesive is applied to the uncoated margin in a wet state with such a vehicle or solvent as will dry rapidly.

The adhesive material employed may be of any suitable kind provided, however, that it becomes effective upon being heated at temperatures higher than body temperature. For instance, it may consist of a thermoplastic lacquer containing a solvent or vehicle which quickly evaporates and leaves the coating of thermoadhesive material dry and impervious to water or moisture. Since it can be applied to the carbon strip in the carbon-coating machine, its manufacture becomes a simple matter, because operators of carbon-coating machines are familiar with coating processes and can regulate, with considerable skill and certainty, the quantity of adhesive applied to the carbon strip, and practically the only additional cost in the manufacture of the carbon strip of the present invention is the cost of the adhesive material itself.

The continuous strip, after it has been coated with the transfer and adhesive material, may be folded into a suitable pack and stored in storage areas'until it is desired to collate the strip with suitable record strips to form manifolding sets.

The strips and the packs formed therefrom may be handled without danger of the adhesive becoming tacky and adhering to the handlers fingers or to adjacent portions of the strip or pack.

The strips may ture and at some later date interleaved with the buyer's record strips to form manifolding material without the necessity of employing the elaborate and costly equipment now generally used by makers of manifolding material to apply wet adhesive to the strips as they are being 001- lated with record strips.

Informing manifolding sets with the improved transfer strip of the present invention, it is merely necessary to collate the. record and transfer strips, bring them into register, and then, while in registration, to apply heat to the pile of strips so that the adhesive on the carbon becomes activated and adheres to the adjacent record strip. By applying the adhesive to both the face and back ofthe carbon strip, the carbon strip itself becomes the binding unit fo rholding to-- gether the record strip above it and the one below it, and it is immaterial how many carbon strips and record strips are collected within the pile so long as suflicient heat can be transferred through the layers to activate the adhesive material carried by the innermost carbon strips.

As the adhesive used is not affected by temperbe sold as articles of manufac-- heated by the users hands.

Other features and advantages will hereinafter appear.

In the accompanying drawings- Figure l is a perspective view of the improved carbon strip of the present invention.

Fig. 2 shows a pile of manifolding sets made according to the present invention, with one manifolding set falling in place on the pile.

Fig. 3 is a perspective view of a manifolding set made according to the present invention, in which the records and carbons are caused to adhere to each other at limited zones ofv attachment. I v

Fig. 4 is a view of a modified form of the manifolding set, shown in Fig. 2, partially rolled back and showing the relation of the carbon sheet and record sheets.

The carbon strip of the present invention, which constitutes a new article of manufacture and which may be supplied to makers of manifolding material to be collated with record strips, comprises a long continuous strip Ill of paper,

or other suitable fabric, coated, usually on one side only, with carbon or transfer material I l, and folded at predetermined intervals along! transverse lines to make a zigzag .folded pile l2.

One longitudinal margin l3 of the carbon strip is left uncarbonized, and on this longitudinal margin there is provided, by any suitable method,

a coating ofadhesive material M. This coating of adhesive material may be applied to the strip l at the same time the strip is provided with the coating of transfer material ll, and preferably the adhesive material I4 is provided on both the front and back of the carbon strip.

The adhesive I 4 is dried before the strip is zig-' zag folded, and the zigzag folded pile l2 may be stored in this condition until it is to be collated with the-record strips or it may then be collate with record strips.

Of course, if desired, the carbon strip I0 may be supplied in roll form rather than in zigzag folded pack form, as shown in the accompanying drawings. I

The adhesive l4 preferably is one which is I applied to the carbon strip in the making of transfer strip with suitable record strips and as v long as the temperature of the storage space is not in excess of body temperature then the adhesive will not become activated or deteriorate in any manner. The pack and the strip from which the pack is formed may be handled prior to collating with the record strips without danger of the adhesive becoming tacky and adhering to either the handlers fingers or to other portions of the strip or pack.

In addition to having the adhesive M in the longitudinal margin 13 of the carbon strip, this margin also has apertures l5 predeterminedly spaced throughout its length. Depending upon the way in which the carbon strip is collated with record strips, these apertures may be used for feeding a superposed pile of record and transfer strips, or they may be used merely for registering the carbon strip with the record strips. Preferably, the apertures I5 are used both for registering and feeding the carbon strip with the record strips.

The preferred method I and apparatus for collating the carbon strip of the present invention with suitable record strips is shown in my copending application, Serial No. 237,375, filed October 28, 1938. The carbon strips l0 may be collated with record strips and cut to form the manifolding set I6, as shownin Fig. 2, wherein the entire margin carrying the adhesive has been heated prior to cutting of the strips to cause the adhesive carried by the entire margin to become activated. However, if desired, the adhesive may be activated only in spots diagrammatically indicated by the shaded areas I! in Fig. 3.

As is common practice, the carbon strip III is narrower than the record strips so that the record sheets l8 of the manifolding set project beyond the carbon sheets lfla. With this arrangement, after writing is performed on the manifolding sets, the record strips are grasped at their projecting margins with one hand while 1 the binding margins are grasped by the other impervious to moisture and water and only actithe latter, the vehicle will quickly evaporate,

leaving the thermoplastic lacquer on the marginal portion of the carbon strip, and in dry and nontacky condition.

In any event, by striping the carbon strip with the adhesive. [4 while coating the strip with transfer material I I, the-quantity of adhesive applied to the carbon strip may be very accurately determined, so that neither too much nor too ing of adhesive can be applied to the margin,

hand. By pulling the hands apart, the record sheets l8 will sever from the binding margin along the lines of weakness [9 leaving the carbon sheets Illa secured together by the binding margin and the record sheets l8 free of interleaved carbon material.

In the manifolding set shown in Fig. 4, the carbon sheet 20 has been formed from a carbon strip narrower than that previously described, and which did not have any registering apertures formed therein, but was provided only with a narrow band. of adhesive material 2| on both sides of the strip along the longitudinal margin.- With the registering apertures omitted from the carbon strip, one operation on the strip is eliminated in the preparation thereof and the coatstrip at the same time the coating of carbon is applied and the strips packaged in roll or zigzag folded pack form.

The record sheets 22- in this form of the invention have a binding margin 23 defined by a perforated tear line 24 with registering apertures 25 formed 'in the binding margin as in the form of the'invention first describe-d.

In the form of the invention shown in Fig.4, the binding margin is unmutilated for a major portion of the length of each-form, as the registering apertures are relatively closely spaced and positioned in the corner of each form adjacent 2,260,602 the side margin of the sheets as shown in the figure referred to.

There has also been shown in my copendin-g application, Serial No. 237,375, the preferred method and apparatus for registering, feeding and collating the strips to'form'the manifolding set shown in Fig. 4.

A manifolding set formed with my adhesive carrying transfer strips, as theadhesive used is unaffected by temperatures below body temperature, may be handled by a user without danger ized lateral margin carrying an adhesive adapted to become effective at a temperature substantially above body temperature so as to permit handling thereof.

4'. As a new article of manufacture, a continuous strip of carbon paper having along one latof the sheets separating by reason of the adhesive losing its adhesive qualities from the heat of the user's hands. A set, furthermore, as it may be formed from my transfer strips by a user subse- 4 quent to the formation of the transfer strips and at a time when actually needed 'by the user, permits a user to form'sets as he needs them and obviates the necessity of the, user purchasing and storing large quantities of-sets pending their use.

The manifolding sets of this invention are claimed in my copending divisionalapplication Serial No. 409,820, filed September 6, 1941.

Variations and mdifications may be made within the scope of the invention and portions of the improvements may be used without others.

I claim: l

1. As a new article of manufacture, a transfer medium for manifolding use comprising a continuous strip of fabric having transfer material applied thereto over part of its area and having a normally ineffective adhesive applied to another part of its area by means of which the transfer medium may be fastened to a record.

strip when it is superposed thereon and the adhesive is made effective by an application of heat substantially higher than ordinarily encountered in the use of transfer strips so that after the transfer strip is. fastened to the record strip the superposed strips may be handled without separating. I v

2. As a new article of manufacture, a continuous strip'of carbon paper having an uncarbonized lateral margin carrying a dried coating of adhesive, said adhesive becoming tacky at a temperature substantially above body temperature thereby permitting the strip to be handled without rendering the adhesive effective.

' thereof a dried coating of water-impervious, ther- 3. As a new article of manufacture, a continu- I ous strip of carbon paper having an uncarboneral margin a dried coating of water-impervious, thermo-responsive adhesive material normally nonadherent at body temperature so that the strip may be handled and stored without the material becoming tacky and adhering to other objects which it might come in contact with during handling and storage. 4

5. As a new article of manufacture, a continuous strip of carbon paper having on both sides thereof along one lateral margin dry water-impervious, thermo-responsive adhesive material normally nonadherent at body temperature so that the strip may be handled andstored without the material becoming tacky and adhering to other objects which it might come in contact with during handling and storage.

6. As a new article of manufacture, a continuous strip of carbon paper having on both sides thereof along one lateral margin dry, water-impervious, heat-set adhesive material normally nonadherent at body temperature so that the strip may be handled and stored without the, material becoming tacky and adhering to other objects which it might come in contact with during handling and storage. Y e

'7. As a new article of manufacture, a transfer pack comprising a continuous zigzag folded carbon paper strip having along one lateral margin a dried coating .of water-impervioua'thermo-responsivc adhesive material normally nonadherent at body temperature so that the pack may be handled without the zig and zag folds adhering to each other. I

8. As a new article of manufacture, a transfer 1 pack comprising a continuous carbon paper strip having along one lateral margin on opposite sides mo-responsive adhesive material adapted to be rendered adherent when heated to a temperature in excess of body temperature, said material being nonadherent at body temperature or less so that r the pack may be handled without the adhesive material being rendered adherent.

CARL w. BREN'N. 

